Sanding attachment for brick making machines



April 26, 1938. H. 1 A CAMPBELL SANDING ATTACHMENT FOR BRICKMAKING MACHINES Filed June 9, 1956 2 Sheets-Sheet l Inventor /f? /e ML gunnen, y

A tomeys April 26, 1938. H. L. CAMPBELL SANDING ATTACHMENT FOR BRICKMAKING MACHINES 2 Sheets-Sheet 2 Filed June 9, 1955 gna/vuur,

Attorneys Patented Apr. 26, 1938 SANDING ATTACHMENT FORV BRICK lVIAK-l ING MACHINES `Hugh L. Campbell, Hazleton, Pa. Application June 9, 1936, `Serial No. 84,383'

2 Claims.

' This invention relates'to an attachment for brick making machines, and'more particularly the invention resides in the provision of a sanding devicewhich may be attached to any stiff- '5 mud brick making machine for the purpose of applying sand to a column of brick clay `prepared previously to the application of the sand thereto and from which bricks are to be formed.

The invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:-

Figure 1 is a side elevational View of the sanding attachment with parts broken away and shown in section.

Figure 2 is an end elevational view of the attachment.

Figure 3 is a bottom plan view of the attachment.

Figure 4 is an enlarged fragmentary view of the attachment taken at right angles to Figure i and with certain parts broken away and shown in section.

In accordance with the present invention the sanding attachment comprises a hopper or receptacle 5 for the sand. The bottom of the hopper or receptacle 5 comprises a block 6 of wood or other suitable material, and the walls of the hopper 5 at said bottom are provided with apertured flanges 'I through the medium of which and fastening elements 8 the bottom 6 is secured to the hopper.

Bolted or otherwise secured to the underside or face of the bottom 6 of the hopper is a plate 9 preferably of metal which supports the hopper on top of the strip of clay for reciprocation thereon.

There is also provided a pair of side strips IU and each of these strips is provided at its respective opposite ends with bolts I I the head ends of which work in slots I2 provided therefor in the plate 9, and the heads of which are accommodated in suitable grooves I3 provided therefor in the underside of the bottom 6 and opening at the respective opposite side edges of said bottom strip as will be clear from a study of Figures 1 and 4, It will thus be seen that the guide strips I I) are suspended from the plate 9 for lateral movement inwardly toward one another or outwardly away from one another.

The side strips Ii) are normally urged toward one another through the medium of oppositely disposed springs Ill. In this connection it will be noted that each of the strips Ill is provided at its respective opposite end with vertical bars I5 secured at their lower ends to the end edges of the strips IB asY at I6. The'springs i4 connect Y the bars I5 in pairs, each spring being connected lat its vrespective opposite end with the bars I5 as at I 6. t

Also each paircf bars I5 is pivotally connected at its upper end With a cross-stripv I'I. Thus it will be seen that the springs I4 act on the bars I5 of each pair to urge the bars inwardly toward one another and consequently the strips Ill inwardly against the sides of the mud column I8 as said column, on the usual conveyor I9 is caused to pass between the side strips ID and under the hopper 5.

Adjacent one end thereof the bottom Sor the hopper is provided with a transverse series of spaced slots 20 that register with slots 2| pro.- vided therefore in the plate 9. i

Slightly in advance of the slots 28 bottom 6 adjacent opposite side. edges thereof is provided with additional slots 22 that align with grooves 23 provided on the inner faces. of the strips I D and which grooves as shown in Figure 4 taper downwardly and also progressively decrease in depth downwardly, with the groove slots 23 opening at the inner sides of the strips I0 so that the sand passing into the grooves 23 through the slots 22 from the hopper 5 will be applied to the sides of the mud column I8.

In this connection it Will also be appreciated that thesand discharging from the hopper 5 through the slots 20, 2I will pass onto the top face or surface of the column I8.

Obviously the sand fed to the top and sides of the column i8 will be rubbed into the column Aincidental to the reciprocatory action of the sanding unit which action is imparted to the unit as the mud column I8 on the conveyor I9 passes between the side strips IIJ and beneath the bottom 6.

For reciprocating the sand unit there is provided a suitably driven shaft 24 supportedA in suitable bearings 25 and equipped with eccentrics Each eccentric 26 has suitably engaged therewith an eccentric strap 21 to which is suitably connected one end of a pitman arm 28, the opposite end of which arm is pivoted to one side of the bottom E of the hopper as at 29. Ihus it will be seen that drive will be transmitted from the shaft 24 to the sanding unit for reciprocating the unit as the sand is being applied to the top and sides of the column I 8, and as said column is being Vconveyed through the machine.

ciprocatory action of the bottom 6 and the side In this connection it will also be understood that the re-Y bottom and a metallic smoothing plate below said 1.V In an apparatus for sanding a strip of clay,`

the combination with a conveyor for moving the strip longitudinally, of a reciprocally mounted hopper disposed over said conveyor and having a bottom, said bottom and plate being so spaced above the conveyor as to enablerthe plate to engage the top of saidstrip, a pair of Vsidemembers swingably mounted on said `hopper to depend from opposite sides of said plate, respectively, forV relative lateral movement to engage the sides of said strip, means for urging said members into engagement with the sides of the strip to smooth and shape the same', said plate and members being slotted to distribute sand on the top and sides of said strip, respectively, andvmeans for reciprocating said hopper longitudinally of said strip.

f2. In an apparatus for sanding a strip of clay, the combination with a conveyor for moving the strip longitudinally, of a reciprocally mounted hopper disposed over said conveyor and having a bottom and a metallic smoothing plate below saidA bottom, said bottom and plate being so spaced above the conveyor as to enable the plate to engage the top of said stripgpairs of links depending from opposite ends of 'said hopper, respectively, a pair of side members swingably supported by'.

said pairs of links beneath opposite sides` of said plate, respectively, for relative lateral movement tor'engage the sides of said strip, means engaged with said links for urging said members into engagement with the sides of the strip to shape Vand smooth the same, cooperating devices on the side members andplate for guiding lateral movement'of the side members, means for reciprocating said hopper llongitudinally of said strip, and said bottom, plate and side members vbeing slotted to distribute sandyon the top and sidesA of-said v strip respectively. l

HUGH L. CAMPBELL. 

